Catalytic performance of an iron-based catalyst in Fischer–Tropsch synthesis

Sarkari, Majid; Fazlollahi, Farhad; Ajamein, Hossein; Atashi, Hossein; Hecker, William C.; Baxter, Larry

doi:10.1016/j.fuproc.2014.05.003

Cited by 38 publications

(21 citation statements)

References 48 publications

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“…For example, in the synthesis of methanol [2], the H2/CO ratio required is 2. Meanwhile, under a single step process (H2/CO ratio = 1), dimethyl ether can be synthesized [3,4]. It is worth noting that H2/CO ratio plays a critical role in the process of producing syngas [5].…”

Section: Introductionmentioning

confidence: 99%

Effects of Platinum and Palladium Metals on Ni/Mg1-xZrxO Catalysts in the CO2 Reforming of Methane

Al-Doghachi

2018

Bull. Chem. React. Eng. Catal.

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Nickel, palladium, and platinum catalysts (1 wt.% each) supported on MgO and MgZrO to prepare Pt,Pd,Ni/Mg1-xZrxO catalysts (where x = 0, 0.03, 0.07, and 0.15), were synthesized by using coprecipitation method with K2CO3 as the precipitant. X-ray diffraction (XRD), X-ray fluorescence (XRF), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), transmission electron microscopy (TEM), H2-temperature programmed reduction (H2-TPR), and thermo gravimetric analysis (TGA) were employed to observe the characteristics of the prepared catalysts. The Pt,Pd,Ni/Mg0.85Zr0.15O showed the best activity in dry reforming of methane (DRM) with 99 % and 91 % for CO2 and CH4 conversions, respectively and 1.28 for H2/CO ratio at temperature 900 °C and 1:1 of CH4:CO2 ratio. The stability of Pt,Pd,Ni/Mg0.85Zr0.15O catalyst in the presence and absence of low stream 1.25 % oxygen was investigated. Carbon formation and amount in spent catalysts were examined by TEM and TGA in the presence of stream oxygen. The results showed that the amount of carbon was suppressed and negligible coke formation (less than 3 %) was observed. Several effects were observed with ZrO2 use as a promoter in the catalyst. Firstly, the magnesia cubic phase stabilized. Secondly, thermal stability and support for basicity increased. Thirdly, carbon deposition and the reducibility of Ni 2+ , Pd 2+ , and Pt 2+ ions decreased.

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Section: Introductionmentioning

confidence: 99%

Effects of Platinum and Palladium Metals on Ni/Mg1-xZrxO Catalysts in the CO2 Reforming of Methane

Al-Doghachi

2018

Bull. Chem. React. Eng. Catal.

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“…For example, the H 2 /CO ratio of 2 is required for methanol synthesis; [3] whilst the ratio is controlled at 1 for dimethyl ether (DME) synthesis under the single step process [4]. In the Fisher-Tropsch process, the H 2 /CO ratio is usually in the range of 1 to 2, depending on the type of fuel synthesized [5].…”

Section: No20 Journal Of Petroleum Research and Studies (Jprands)mentioning

confidence: 99%

Influence of Ce2O3 addition on the basicity of Ni/MgO and on its catalytic performance in dry reforming of methane (Turning CO2 to fuel)

Al-Doghachi

Taufiq‐Yap

2021

Journal of Petroleum Research and Studies

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The only way to stabilize the Earth’s climate is to stabilize the concentration of greenhousegases in the atmosphere. In this study, the conversion of methane and CO2 to synthesis gasusing dry reforming over catalysts Ni/Mg1-XCeXO (x= 0, 0.03, 0.07, 0.15; 1 wt% Ni each),dry reforming of methane was performed. The catalysts were prepared by K2CO3 coprecipitationfrom aqueous cerium nitrate hexahydrate and magnesium nitrate hexahydrate.Impregnation of nickel (II) acetylacetonate onto MgO-Ce2O3 was then conducted. TEM,XRD, FTIR, XRF, XPS, and BET characterizations of the catalysts were carried out.Results showed that the catalysts were reduced at 700 °C by H2 prior to each reaction. CH4and CO2 conversions at 900 °C of the catalysts after being tested for 200h decreased in theorder Ni/Mg0.85Ce0.15O, Ni/Mg0.93Ce0.07O, Ni/Mg0.97Ce0.03O, and Ni/MgO. The highest H2and CO selectivities, was observed at a 1:1 CH4:CO2 mole ratio. We further performed adry reforming in the presence of low-concentration oxygen flow (1.25 Vol %) and found anincreased CH4 conversion.

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“…Biomass gasification is one of the best technologies for converting biomass to biofuels . On the other hand, energy crisis has highlighted the significance of Fischer‐Tropsch synthesis (FTS) method . Being sensitive to temperature, FTS may end up with different products depending on the reaction temperature , .…”

Section: Introductionmentioning

confidence: 99%

Deactivation Model for an Industrial γ‐Alumina Supported Iron Catalyst in the Fischer Tropsch Synthesis

et al. 2019

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In this research, deactivation model of an industrial γ‐alumina‐supported iron catalyst was investigated. Experiments were carried out in a fixed‐bed micro reactor over one‐time and four‐time impregnated catalysts at a reaction temperature of 250 °C, H2/CO ratio of 1, gas hourly space velocity (GHSV) of 3000 h−1, and reaction pressure of 2 bar. Neural networks strategy was used to predict the steady‐state catalytic activity for the ultimate purpose of determining the best deactivation model. Non‐linear regression and statistical analyses showed that the second‐order generalized power‐law equation (GPLE) could adequately described the deactivation behaviors of the considered catalysts. A comparison on the model parameters indicated higher deactivation rate of the four‐time impregnated catalyst, as compared to the one‐time one.

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Catalytic performance of an iron-based catalyst in Fischer–Tropsch synthesis

Cited by 38 publications

References 48 publications

Effects of Platinum and Palladium Metals on Ni/Mg1-xZrxO Catalysts in the CO2 Reforming of Methane

Effects of Platinum and Palladium Metals on Ni/Mg1-xZrxO Catalysts in the CO2 Reforming of Methane

Influence of Ce2O3 addition on the basicity of Ni/MgO and on its catalytic performance in dry reforming of methane (Turning CO2 to fuel)

Deactivation Model for an Industrial γ‐Alumina Supported Iron Catalyst in the Fischer Tropsch Synthesis

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